Growth Analysis of Cancer Biology Research, 2000-2011

Journal of Information Science Theory and Practice.
2015.
Sep,
3(3):
75-80

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- Received : September 03, 2015
- Accepted : March 19, 2015
- Published : September 30, 2015

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Methods and Material:

The PubMed database was used for retrieving data on ‘cancer biology.’ Articles were downloaded from the years 2000 to 2011. The articles were classified chronologically and transferred to a spreadsheet application for analysis of the data as per the objectives of the study.
Statistical Method:

To investigate the nature of growth of articles via exponential, linear, and logistics tests.
Result:

The year wise analysis of the growth of articles output shows that for the years 2000 to 2005 and later there is a sudden increase in output, during the years 2006 to 2007 and 2008 to 2011. The high productivity of articles during these years may be due to their significance in cancer biology literature, having received prominence in research.
Conclusion:

There is an obvious need for better compilations of statistics on numbers of publications in the years from 2000 to 2011 on various disciplines on a worldwide scale, for informed critical assessments of the amount of new knowledge contributed by these publications, and for enhancements and refinements of present Scientometric techniques (citation and publication counts), so that valid measures of knowledge growth may be obtained. Only then will Scientometrics be able to provide accurate, useful descriptions and predictions of knowledge growth.
1. INTRODUCTION

Cancer can be defined as a disease in which a group of abnormal cells grow uncontrollably by disregarding the normal rules of cell division. Normal cells are constantly subject to signals that dictate whether the cell should divide, differentiate into another cell, or die. Cancer cells develop a degree of autonomy from these signals, resulting in uncontrolled growth and proliferation. If this proliferation is allowed to continue and spread, it can be fatal; almost 90% of cancer-related deaths are to tumour spreading. The foundation of modern cancer biology rests on a simple principle that virtually all mammalian cells share similar molecular networks that control proliferation, differentiation, and cell death.
Phenomenal advances in cancer research have given an insight into how cancer cells develop (
Hejmadi, 2010
). The growth of literature is a key work for all scholars and students of comparative literature (
Chadwick, 1986
). The changes in the size of literature over a specific period are termed as growth literature.
Gilbert (1978)
has reviewed the existing literature on the indicators of growth of knowledge in scientific specialties, and has listed many ways of measuring it, noting their strengths and limitations and commenting, at the same time, on their uses.
Gupta, Sharma, and Karisiddappa (1977)
suggested two approaches that have normally been considered in understanding knowledge growth: (i) Qualitative and (ii) Quantitative. A qualitative approach suggests structural or descriptive models of knowledge growth, while a descriptive model uses social phenomenon to explain diffusion and creation of knowledge. A quantitative approach employs summarization of statistics to describe the observed behaviour, while applying growth and technology diffusion models and bibliometric/Scientometric techniques. Many studies have been made on the growth of literature in the field of science literature but only very few studies have been conducted on cancer biology research. Hence an attempt has been made to analyse the growth of cancer biology research literature. The authors studied only growth indicators as a pilot study for further study, viz. collaborative research trend; cross national analysis; obsolescence; etc.
2. OBJECTIVES

- • To study and explore the applicability of selected growth models in the world in cancer biology literature;
- • To determine the rate of growth of cancer biology literature by calculating relative growth rates and doubling time for publications;
- • To fit both a modified exponential curve and logistic curve for the original publications data, studying actual growth.

3. REVIEW LITERATURE

Literature growth studies have become very common in the field of Bibliometrics, Informatrics, and Scientometrics. Studying growth patterns in the NLM’s serials collection and in Index Medicus journals between 1966 and 1985,
Leeds (1964)
“Law of Exponential Growth” has been further dealt with by Tague, Beheshti, and Rees-Potter (1981), and by Ravichandra Rao and Meera (1992). The exponential growth of the literature is described mathematically by the exponential function YT =a.ebt where YT represents the size at time t, a is the initial size, and b is the continuous growth rate which is related to the annual percentage growth rate r, as: r =100(eb-1).
Egghe and Ravichandra Rao (1992)
concluded, however, that the power model (with exponent >1) is the best growth model for sciences and technology fields, while the Gompertz S-shaped distribution better fits databases of the social sciences and the humanities.
4. SCOPE AND LIMITATION

The present study is confined to cancer biology literature as reflected in the PubMed database from the years 2000 to 2011.
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5. METHODOLOGY

The PubMed database was used for retrieving data on ‘cancer biology’. Articles were downloaded covering the years 2000 to 2011. The articles were classified chronologically and transferred to a spreadsheet application, and the data is analysed as per the objectives of the study.
6. STATISTICAL METHOD

To investigate the nature of growth of articles via exponential, linear, and logistic tests. The exponential growth is defined as
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7. ANALYSIS AND DISCUSSION

As
Table 1
clearly indicates, the value of an average RGR of articles R
Relative Growth-rate (RGR) and Doubling Time (Dt) of Articles in Cancer Biology from 2000 to 2011

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8. SUGGESTIONS

a) Since the growth of literature is on an exponential trend, medical libraries may think of resource sharing and networking options in order to avoid financial constraints;
b) Medical libraries may allocate budget for various resources scientifically.
9. CONCLUSION

The many papers have tried to estimate the growth of knowledge in various ways, as many questions have been raised about the validity and reliability of Scientometrics measures for this process. It appears that, for the “growth of knowledge” subfield, the time is not yet ripe for a logarithmic decline in the number of first-rate papers. There is an obvious need for better compilation of statistics on numbers of publications in the years from 2000 to 2011 in various disciplines on a worldwide scale, for informed critical assessments of the amount of new knowledge contributed by these publications, and for enhancement and refinement of the present Scientometrics techniques (citation and publication counts), so that valid measures of knowledge growth may be obtained. Also, studies of literature growth need to become more exact in the description of their models and more rigorous in the application of statistical tests to determine how well these models fit reality. Only then will Scientometrics be able to provide accurate, useful descriptions and predictions of knowledge growth.
Chadwick H.M.
,
Chadwick N.K.
1986
Growth of literature
Cambridge University Press
Cambridge
(Original work published 1932)

Egghe L.
,
Ravichandra Rao I.K.
1992
Classification of growth models based on growth rates and its applications
Scientometrics
25
(1)
5 -
46
** DOI : 10.1007/BF02016845**

Gilbert G.N.
1978
Measuring the growth of science: A review of indices
Scientometrics
1
(1)
9 -
34
** DOI : 10.1007/BF02016837**

Gupta B.M.
,
Sharma P.
,
Karisiddappa C.R.
1977
Growth of research literature in scientific specialties: A modeling perspective
Scientometrics
40
(3)
507 -
528

Hejmadi M.
2010
Introduction to cancer biology
2nd ed.
Bookboon
London

2004
Scientometric analysis of social science research in India (Ph.D. thesis)
Dept. of Library and Information Science, Karnataka University
Dharwad

Line M.B.
,
Roberts S.
1976
Growth and composition of social science literature
International Social Science Journal
28
(1)
122 -
159

Orr R.H.
,
Leeds A.A.
1964
Biomedical literature: Volume, growth, and other characteristics
Federation Proceedings
23
(6)
1310 -
1331

Ravichandra Rao I.K.
,
Meera B.M.
,
Ravichandra Rao I.K.
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Growth and obsolescence of literature: An empirical study
INFORMETRICS’91: Selected Papers from the Third International Conference on Informetrics
Bangalore
9-12 August 1991
1992
377 -
394

Roberts S.A.
,
Chak M.
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Size growth and characteristics of the serial literature of geography
Social Science Information Studies
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** DOI : 10.1016/0143-6236(81)90044-2**

Citing 'Growth Analysis of Cancer Biology Research, 2000-2011
'

@article{ E1JSCH_2015_v3n3_75}
,title={Growth Analysis of Cancer Biology Research, 2000-2011}
,volume={3}
, url={http://dx.doi.org/10.1633/JISTaP.2015.3.3.5}, DOI={10.1633/JISTaP.2015.3.3.5}
, number= {3}
, journal={Journal of Information Science Theory and Practice}
, publisher={Korea Institute of Science and Technology Information}
, author={Keshava
and
Thimmaiah, B. N.
and
Agadi, K. B.}
, year={2015}
, month={Sep}